Nut-lock.



P. C. TAMBLING.

NUT LOCK.`

APPLIOATION FILED SEPT. 26, 1907.

Patented 0012. 13, 1908.

-. PILE- 'and at. one side edge with an inwardly Meting engaging portion or toothG, adapted' UNITED STATES ruTENT OFFICE. N

FRANK C. TAMBLING, OF SEATTLE, `WASHINGTON, ASSIGNOR OF ONE-THIRD TO ELSIE G SMILEY, OF STEVENS POINT, WISCONSIN.

NUT-LOCK.

`Specification Letters Patent.V

Patented Oct. 13, 1908.

Application filed September 26, 1907. Serial No. 394,719.

.for its object to provide a simple and inexpensive nut lock that may be readily and. easily applied in position without the aid of a wrench, and which, when in positionv on the bolt will lock the nut securely against reverse rotation.

In the accompanying drawings,`-Figure l is a central longitudinal sectional view of a lock nut partly screwed on the bolt; Fig. 2 is a similar View, the lock nut in locking position; and Fig. 3 is an enlarged detail perspective view of the loclrnut. Y

In the accompanying drawings, which are for illustrative purposes only, and therefore, are not drawn to any particular scale, 1 indicates a bolt of ordinary construction, and 2 a nut otl ordinary construction in position thereon. 3 indicates thev improved locking nut. v

In carrying out. the invention, the thread'- ed aperture 4l of the lock nut is made of slightly greater diameter than the aperture of the nut 2 and of the diameter of the bolt on which it is to be used, so that the thread 5 of the lock nut will loosely engage the thread of the bolt' body when screwed thereon, the purpose of which will be disclosed. Said lock nut is provided on its inner face proto bite or engage the other face of the nut v2.

In practice, the locking nut is screwed on' the bolt body until its engaging portion or tooth bites or engages the nut 2 or a fish plate or other stationary object through which thebolt l is passed, which operation causes the lock nut. to be turned at an angle relativo to the bolt nut, and its threads to cross and bite into those lof the bolt body, looking the nut securely in position on the bolt.

.IIaving described my invention, I. claim 1. A lock nut of the character specified having athreaded aperture of greater diaineter than the aperture of the bolt nut, and an engaging portion or tooth formed on its inner face, designed to engage the outer face of the bolt nut, the engagement between the bolt body and lock nut threads being sufficiently loose to cause the threads of the latter to cross and bite into those of the bolt body, when screwed into locking position.

2. A lock nut of the character specified, having a threaded aperture of greater dialneter than the aperture of the bolt nut and i having formed at oneedge of` its inner face a projecting portion or tooth arranged to engage the outer face of bolt nut, the engagement between the bolt body and lock nut threads being sutliciently loose to cause.

the threads of the latter to cross and bite into those of the former, when the lock nut is screwed into locking position, said opera-tion resulting in the mutilation of the engaging portions of the bolt body and lock nut threads, whereby the latter is locked against removal.

3. A lock nut of the character specified having a threaded aperture of greater diaineter than the aperture of the bolt nut and an engaging portion or tooth arranged to engage the outer face of the bolt uut, the engagement between the bolt body and lock nut threads being suliiciently loose to causev those of the latter to cross and bite. into those of the former when the latter is screwed vinto,

locking position.

4. A. lockingnut having a threaded aperture of greater diameter than the diameter of the threaded portion of the bolt on which `it is to be used and provided on its inner face with a projection.

A looking nut having a. threaded aperture of greater diameter than the diameter of the threaded portion of thel bolt on which lit is to be used and provided on its inner face my hand 'in presence of'two subscribing witnesses.

FRANK 'IAMBLING. Witnesses v FRANK Emo'r, onN E. PImLrs. 

